Update app.py

app.py

@@ -1,7 +1,7 @@
 import subprocess
 import sys
-from os.path import abspath, dirname
-sys.path.append(os.path.join(dirname(abspath(__file__)),'GroundingDINO'))
+from os.path import abspath, dirname,join
+sys.path.append(join(dirname(abspath(__file__)),'GroundingDINO'))
 print(os.path.join(dirname(abspath(__file__)),'GroundingDINO'))
 def run_commands():
     commands = [